Car-wheel



(No Model.)

J. GOETTEL. GAR WHEEL.

No. 363,383. Patented May 24, 1887.

l/viimeomza ll ll iTEn STATES JOHN GOETTEL, OF BOSTON, MASSACHUSETTS,ASSIGNOR OF ONEIIALF TO FREDERICK BALDT, OF CHESTER, PENNSYLVANIA.

CAR-WHEEL.

SPECIFICATION forming part of Letters Patent No. 363,388, dated May 21887. Application filed January 15, 1887. Serial No. 224,430. (Nomodel.)

I: and use the same.

My invention relates to car-wheels which are so constructed as to allowfor the slip in turning curves in the track; and its object is toprovide a wheel of simple yet strong construction, all the parts beingmade of caststeel, and which will turn independently of the axle whennecessary.

My invention consists in certain combinations and arrangements of parts,as hereinafter set forth, and particularly pointed out in the claims,reference being had to the accompanying drawings, in which- Figure 1 isa view of the outside of one of my improved wheels. Fig. 2 is asi milarview, with the annular retainingplate removed to show the arrangement ofthe anti't'riction rollers. Figs. 3 and 6 are similar views showingother arrangements of the rollers. Fig. 4 is an enlarged verticalsection of the upper half of a wheel. Fig. 5 is a similar section of amodified construction.

Similar letters refer to corresponding parts in all the views.

Upon the axle A is secured a hub, B, which is formed with twoannularshoulders, b b, a raised cylindrical portion, 1)", and a circularflange, I), extending from one end of the cylindrical portion 1)", atright angles thereto. This flange is preferably arranged at the innerend of the hub 13, and may be strengthened by radial ribs b.

The wheel 0 is annular, its inside diameter being somewhat greater thanthe diameter of the cylindrical portion b of the hub. The inner face, 0,of the wheel 0 is cylindrical and of the same thickness as theportion 1) of the hub. Between these two cylindrical surfaces is aseries of anti-friction rollers, D, cylindrical in form and of a lengthequal to the thickness of the wheel at c. The portion 1) of the hub thusforms the seat on which these rollers rest flange I) and the plate E,and is therefore caand turn. They are confined in place by the flange bat one end and by an annular retaining-plate, E, at the other end, whichfits over the shoulder b, and is of about the same diameter as theflange If. The plate E is secured by bolts E, passing through the hub13. The wheel 0 rests upon the rollers D between the pable of rotatingabout the hub B.

In order to provide against the entrance of dust and grit, the wheel Gis formed with two annular shoulders, c, which project over the outeredges of the flange I) and plate E, as shown; and to still further guardagainst this 6 5 each face of the wheel above the shoulder a, and theouter corners of the flange b and plate E, are chamfered off to make aninclined surface, as shown, so that the cinders and dust falling uponitwill slide offby their own weight.

The rollers D may be placed close together, as shown in Fig. 8; but Iprefer to arrange them as indicated in Fig. 2, wherein the rollers areslightly separated, and a small intermediate roller, D, is placedbetween every two 7 5 rollers, D, so as to alternate with them, asshown. These intermediate rollers reduce the wear of the main rollers Don each other, and also serve an important function in distributing thelubricating material. They may be 8 used also as shown in Fig. 6, wherethe rollers D are set close together.

The wheel 0 is cored out to form an annular chamber, 0, which lightensthe wheel, and also serves as an oil-reservoir. I11 the outer 53 face ofthe wheel are two or more filling-holes, c closed by screw-plu gs c, bymeans of which supplies of oil can be introduced. Oil-duets 0 lead fromthe chamber O to the inner face ofthe wheel a and conduct the oil totherollers D D. Another set of oil-holes, c, is provided in the plate E,being closed by plugs a. An oilway, (Z, may be formed in the rollers Dand face 0 and seat I)", if desired.

In the modification shown in Fig. 5 the hub B is of much greaterdiameter, forming prac tical] y the body of the wheel, and being coredout to lighten the wheel. The faces of the movable rim 0 are flush withthe outer faces of the flange b and plate E; but the construc- I0) tionis otherwise the same as that above described.

All the parts of this wheelare made of caststeel, and are fittedtogether with a minimum of machine-work, which, in any event, is simplelathe-work. The flange b is located at the rear of the wheel to resistthe side-thrust of the axle when the wheel comes in contact with acurve. The nuts and oil-holes are all on the outside, where they areeasily inspected and attended to.

The operation of myimproved wheel is as follows: When running onatangent, all the parts of each wheel revolve with the axle; but when acurve is reached the wheel on the outside of the curve can slip aroundon its rollers DD, or the axle and hub can turn within the wheel on theinside of the curve, or both operations may take place at thesame time,the result in any case being that neither wheel is compelled to slip onthe track, but each rolls smoothly, independent of the other. Thisrelieves the wheels-and track from the wear to which they are subjectedby the slipping of wheels which are rigidly secured to the axle; and,furthermore, it saves the motive power which must be expended indragging such wheels around curves; also, thereby reducing the flangefriction 011 curves.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. The combination, with hub B, having cylindrical seat b and flange b",provided with ribs b, of the steel rollersDD, equal in length to saidseat b the plate E, secured to said hub, the annular wheel 0, fittedbetween said flange and plate and having a cylindrical face, 0,

3. The combination, with the hub B, having cylindrical seat Z) andflange I), of the plate E, secured to said hub, the rollers D D, restingon said seat between said flange and plate, and the wheel 0, having theoil-chamber G, filling-holes 0*, and ducts c, substantially as and forthe purpose set forth.

4. The improved car-wheel hereinbefore set forth, consisting of thecombination of hub B, having shoulder 6, seat d and flange b, annularwheel 0, having chamber 0, face 0, shoulders c c, filling-holes ciandoil-ducts 0, steel rollers D D, plate E, and bolts E, the shoulders c c,flange b, and plate E being chamfered off to form an inclined surface,sub stantially as and for'the purpose set forth. In witness whereof Ihave hereunto set my hand, this 11th day of January, 1887, in thepresence of two witnesses.

JOHN GOETTEL.

Witnesses:

WM. F. HUNTEMANN, E. L. YEWELL.

